## Lenses, Physics

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Older people wear eye glasses with bifocal corrective lenses . What is the eye defect that necessitate this eye glasses ?

#### Pseudo force, pseudo force: A "force" that arises since an observer is...

pseudo force: A "force" that arises since an observer is naively treating an accelerating frame like an inertial one.

Disadvantages of A.C. Transmission of power 1. An a.c. line needs more copper than a d.c. line. 2. The construction of an a.c. transmission line is more complex than d.c. tr

#### Find effectual capacitance, Q. Three capacitors every of capacitance 3 pF a...

Q. Three capacitors every of capacitance 3 pF are connected in parallel. Find effectual capacitance. The effectual capacitance Cp = C1 + C2 + C3 = 9 + 9 + 9 = 27 pF

#### Why does the electric field inside a dielectric decrease, Normal 0 ...

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#### Two-or-three-dimensional-motion, Net force acting on particle of mass 2 kg ...

Net force acting on particle of mass 2 kg is 10N in north direction.At t=o, particle was moving eastwards with 10m/s. Find displacement and velocity of particle after 2 seconds.

#### Magnet, i need to demonstrate the magnetic properties as a part of my assig...

i need to demonstrate the magnetic properties as a part of my assignment. then how can i do that?

#### Lumen, lumen; lm: The derived SI unit of luminous flux, described as t...

lumen; lm: The derived SI unit of luminous flux, described as the luminous flux emitted through a uniform point source of 1 cd emitting its luminous energy on a solid angle of

Inertia with a spade Scoop up a spadeful of dry earth. Now pitch the earth away from you. View that when the spade stops the earth flies on due to inertia.

#### Tachyon, Tachyon A purely speculative particle that is presumed to trav...

Tachyon A purely speculative particle that is presumed to travel quicker than light. According to Einstein's equations of special relativity, a particle along an imaginary rest

#### Experiment of serviceable spring balance, A serviceable spring balance ...

A serviceable spring balance The quality of rubber deteriorates rather rapidly in unfavourable climatic conditions; a coiled steel spring is preferable. The pattern defined ha